src/hotspot/share/runtime/os.cpp

*** 853,863 ****
  int os::random() {
    // Make updating the random seed thread safe.
    while (true) {
      unsigned int seed = _rand_seed;
      unsigned int rand = random_helper(seed);
!     if (Atomic::cmpxchg(rand, &_rand_seed, seed) == seed) {
        return static_cast<int>(rand);
      }
    }
  }
  
--- 853,863 ----
  int os::random() {
    // Make updating the random seed thread safe.
    while (true) {
      unsigned int seed = _rand_seed;
      unsigned int rand = random_helper(seed);
!     if (Atomic::cmpxchg(&_rand_seed, seed, rand) == seed) {
        return static_cast<int>(rand);
      }
    }
  }
  
*** 1802,1812 ****
   * returns the state set after the method is complete
   */
  os::SuspendResume::State os::SuspendResume::switch_state(os::SuspendResume::State from,
                                                           os::SuspendResume::State to)
  {
!   os::SuspendResume::State result = Atomic::cmpxchg(to, &_state, from);
    if (result == from) {
      // success
      return to;
    }
    return result;
--- 1802,1812 ----
   * returns the state set after the method is complete
   */
  os::SuspendResume::State os::SuspendResume::switch_state(os::SuspendResume::State from,
                                                           os::SuspendResume::State to)
  {
!   os::SuspendResume::State result = Atomic::cmpxchg(&_state, from, to);
    if (result == from) {
      // success
      return to;
    }
    return result;